The zoo and its aquarium had almost 3 million visitors in 2010. It is considered to be the most visited zoo in Europe and one of the most popular worldwide. Regular animal feedings are among its most famous attractions. Globally known animals like Knut, the polar bear, and Bao Bao, the Giant Panda contribute to the zoo's public image.
Opened on August 1, 1844 the Zoologischer Garten Berlin was the first zoo in Germany. The aquarium opened in 1913. The early animals were donated by Frederick William IV, King of Prussia, from the menagerie and pheasantry of the Tiergarten.